Stop motion for alpha doubling and twisting machine



H. WRAY Oct. 10, 1933.

STOP MOTION FOR A DOUBLING AND TWISTING MACHINE Filed July 22, 1932 A TTORNEYS.

i 'atented Get. 10, 193 3 e site Application .luly 22, 1932.. Serial No. 623,914

ll) Claims.

This invention relates to a stop motion for use in connection with a machine upon which yarn is doubled and twisted, and has for one of its objects to provide a construction by which no single length of yarn will be supplied for any appreciable distance to the bobbin or package upon which the doubled or twisted yarn is wound.

Another object of the invention is to provide a construction whereby should breakage occur in one of the strands of thread which are being doubled and twisted, the, other strand of thread willalso be broken atapproximately the same point in order that the package of doubled and twisted thread will not continue to draw one of the strands of thread without theother.

Another object of this invention is to provide a construction in which the doubling and twisting may be performed in a single operation rather than utilizing a machine for doubling and then another machine for; twisting with a reeling 'or packaging of the'doubled'untwisted strands between the operations performed by the two machines and to provide in such an arrangement a stop motion to prevent faulty yarn as the combined operation on a single machine progresses.

Another object of the inventionis the provision of means whereby thetwo spools may be readily placed upon or removed from the axle upon which they are to turn. I

Another object of the invention is the provision of means whereby-maximum size packages may be placed on such axles to permit the yarn to be drawn therefrom. i

A further object of the invention is to provide a means for obtaining such results whichrwill be simple in construction and effective in its operation to accomplish the desired results.

With these and other objects in view, themvention consists of certain novel features of cone 44) struction, as will be more fully described, and

particularly pointed out inthe appended claims.

In the accompanying drawing: 7 Fig. 1 is an elevation of the construction embodying my invention as clamped to the creel of a spinning machine, and illustrating diagrammatically thefeed rolls, thev package receiving bobbin, with the ring thereabout and .a traveler thereon. V

Fig. 2 is a perspective'view of the frame for supporting the spools and showing the stop members in one position to which they may move. Fig. 3 is a section on line ,33 of Fig. 1. Fig. 4 is a top plan view of a detail of the bracket supported on the spindle and showing fragmentally the ends of the spools and the relation of the control members.

Fig. 5 is an elevational view looking at the back of the spools and the control members.

Fig. 6 a perspective view showing a fragmental portion of the spool with the control member engaging the same.

Fig. 7 is a perspective view showing the position to which one arm of the U-shape bracket may be moved to permit removal of the spindle from 5 operating position for the removal or replacement of yarn packages or cheeses thereon.

v In the, twisting of doubled yarn it is usual to double the strands and reel the same in one mamachine and then twist these doubled strands in 7 another machine, and in order that this may be advantageously performed in a single machine, I have provided an arrangement by which two yarn packages maybe mounted'side by side and a strand of yarn taken from each package simultaneously for doubling and then twisted without an intermediate reeling or packaging between the doubling and twisting; and in order that this maybe more advantageously performed, I have provided a-stop motion so that should one, of. 0 the strands or threads break the other strand will be likewise broken or stoppedfrom being drawn from the supply package that a single l ngth will not be formed and the break may be more quickly detected by the operator with- 5 out close observation. I have also provided a construction by which the yarn may be readily mounted upon the spindle in a bracket and a maximumsized package mounted in position to be drawn therefrom; and the following is a detailed description of the present embodiment of this invention illustrating the preferred means by which these advantageous results may be accomplished.

With reference to the drawing, is designates the creel on a twisting frame which is provided 5 with feed rolls 11, 12 and 13 for feeding thread from the supply package through the pigtail guide 14 from whence it passes through the guide 15 where itis taken up by the bobbin 16 mounted upon a suitable spindle 17 rotated by pulley 18 and belt119, all in the usual manner; The yarn may be carried about the spindle by any of the well-known methods such as by a ring with a traveler mounted thereon supported in the rail 22 for vertical movement to supply the traverse motion along the bobbin to lay the yarn thereon to form the package as at 23.

The support for the supply packages consists of an L shaped frame 25 which. is bolted to the upright 26. of the creel as'at 27 and has swingarms 36 and 37 which are curved to clear the yarn packages and are provided with fingers 38 and 39 laterally extending toward. each other and upon which are mounted porcelain or other wear-resisting members 49 and 41 which are suitably shaped to guide the yarn thereover and prevent it from running off either end thereof as by means of the horns Ihe yarn or strands of thread 43 and 44 as they are lead from the pack age are drawn over these porcelain guides 40 and 41 and are brought together through the pigtail guide 14 and thence are led to the package 23 in the usual manner, which arrangement the threads are doubled and are twisted one about the other.

In order that the spools or packages may be controlled in their action Ihave slotted or formed a kerf 45 in the inner or adjacent ends of each spool 34 and 35 and have journaled in a bracket 46 mounted on t1 e spindle 33 between the spools, the control members 47 and 48 each of which is provided with an outer feeler part oiiset as at 49 to provide one abutment and with a bent guide finger 50 atits end to'provide another abutment between and beneath which the yarn or thread may run in its travel from its package to the guide member 40 or 41 and thus the thread supports'the arm as shown in Figs. 1 and 3, which is of a sufficient weight so that when unsupported by this thread the arm will swing about'its journal in its bracket 46 and drop to the position illustrated in Figs. 2 or 6.

In operation when the thread 44 breaks the member 47' drops by reason of gravity and moves a finger 51 on the inner end of this member into a position to engage the keri 45 of the spool 34 and cause the companion thread or strand 43 to break, ther by stopping undesired singling of the yarn, due to the break or" one thread 44 only. Likewise, if it so happens that the thread 43 first breaksthen the control member 48 would swing about its journal and the finger 52 on the inner end of the member 48 would engage the spool 35 causing it to stop and the thread 44 to break, whereby a similar result is obtained.

The members 47 and 43 are held in bearing grooves suitably provide in the bracket 46 by retaining plates 53 and 54 which may be removed by suitable screws for holding them in position. Stop pins 59 and 66 are positioned in the rear end of the bracket 45 to be engaged by the crank portions of the control members 47 and 48 which support the fingers 50 and limit the upward swinging movement of each of the members 47 and 48 and if desired these stops may be positioned to cause the control members to applya tension on the yarn by reason of the resiliency of the wire arms. These stops also will limit the amount the control members may drop each by. engagement with the other stop from that causing it to perform the function just above mentioned and thus these members wi positions illustrated in 2.

v The arm 28 is swivelly mounted about the pin 29 and held in the position shown in Figs 1 and 2 by a leaf spring 55 ;'this arm being so shaped drop no further than to the at its hub end 56 as to provide flat surfaces 5'? for engagement in the position shown in Fig. 2 and a flat surface 58 to be engageg by the spring 55 in the position shown in Fig. 7, whereby this arm may be swung about its pivot to a right angularly extending position permitting free withdrawal of the spindle from its bearing 31 to remove the spools and the yarn or thread thereon. from either end of the spindle to be replace by other spools and cheeses when desired. It will be understood that the spindle 33 is lifted from its notched bearing 32 when it is desired to be removed to permit the swinging movement of the arm 28.

The foregoing description is directed solely towards the construction illustrated, but I desire it to be understood that I reserve the privilege of resorting to all the mechanical changes to which the device is susceptible, the invention being defined and limited only by the terms of the appended claims.

I claim:.

1. In a twisting machine, a pair of spools the threads of which are to be twisted together, means for rotatably supporting said spools, means engaging the thread drawni om one spool and responsive to the breaking the thread for engaging the other spool and stopping rotation thereof.

2. Ina twisting machine, a pair of'spools the threads of which are to be twisted together, means for rotatably supporting said spools, and a pivotan 1y mounted feeler member having its swinging arm portion supported against the action of gravity by the thread drawn from one of saidspools .1

and having another portion responsive to the swinging movement of the member upon breaking ofthe thread for engaging the other spool and stopping the rotation thereof.

3. In a twisting machine, a pair of spools'the threads of which are to be twisted together, means for rotatably supporting said spools, and a pivotally mounted feeler member having a journaled portion extending horizontally and at right angles to the axis of the spool and an arm portion ex tending at right angles to the journaledportion and across the front of the spool, said arm resting on the thread drawn from the spool'and supported thereby, said member also provided with a pawl portion on the other side of said journal portion and extendingrat right angles thereto to engage the other spool upon breaking of said supporting thread to stop the rotation of said spool.

4. Astop motion for a twisting machine having a pair of spools the threads of which are to be twisted together, a spindle on which the spools are placed, a bracketon the spindle between the spools, a pair of members each journaled in the bracket and having an outer part extending in spools, a pair of members each journaled in the bracket and having an outer part extending in front of a spool and under which the thread from the spool passes, and 'a part on saidmember for engaging the opposite spool when the member drops on the breaking of the thread of the first spool, the inner end of each spool having a kerf therein and each member having a crank end for engagement with the kerf when said member drops on the breaking of a thread.

6. In a thread twisting machine, a frame having a bearing in one part thereof, a pivoted arm depending from another part and having a notch therein, a spindle having one end fitting in the bearing and its other end in the notch, a pair of spools on the spindle, a cheese on each spool the inner ends of the spools having recesses therein, a bracket fastened to the spindle between the spools and having a pair of bearing openings therein, a rod having a straight part rotatably arranged in each opening with the outer part of the rod bent and extending in front of each cheese, this part of each rod being of substantial ly inverted U-shape with the thread passing under the bight thereof, the rear end of each straight part of each rod being bent into crank shape for engaging the recess in the opposite spool when the front part of the rod drops on the breaking of the thread of the other spool.

'7. In a machine having a package support, a frame of generally U-shape with a bridge portion and two arms extending therefrom, a bearing carried by each arm opening towards said bridge portion, a spindle supported in said bearings,

means to swingably support one arm whereby it may be swung from supporting position for removing the spindle and spools from position.

8. In a machine having a package support, a

frame of generally U-shape with a bridge portion and two arms extending therefrom, a bearing carried by each arm opening towards said bridge portion, a spindle supported in said bearings, means to swingably support one arm whereby it may be swung from supporting position for the purpose of removing the spindle and spools from position, and resilient means for retaining said arm in working or removed position.

. 9. In a twisting machine, a plurality of spools of yarn which are to be twisted together, a single spindle for rotatably supporting said spools and stop motion means for said spools also supported by said spindle and adapted when the yarn from one spool breaks to stop rotation of another of said spools.

10. In a twisting machine, a plurality of spools of yarn which'are to be twisted together, a. single spindle for rotatably supporting said spools, and means engaging the yarn drawn from one spool and responsive to the breaking of the thread for engaging another spool and stopping rotation thereof.

HENRY WRAY. 

